fishing methods

• fish can be caught or reared - the fishing method used depends on the type of fish and where its found
• trawling is a very common method of fishing - trawlers are fishing boats that catch fish using nets
• there are different methods of trawling - some drag a net through the open sea, and others along the surface of the seabed - bottom trawling
• dredging is like bottom trawling, but uses a metal basket instead of a net
• large numbers of fish are raised in tanks or enclosures in rivers and lakes or in cages in the sea, eg salmon, carp and trout
• as with factory farmed land animals, there is overcrowding - the fish are more likely to suffer from diseases
• when the fish are caught, they may be washed and gutted on the boats before they are brought to shore
• fish are chilled or salted to prevent spoilage on the way to supermarkets or fishmongers